Lymphatic filariasis

Lymphatic filariasis, also commonly known as elephantiasis, is a tropical infectious disease caused by parasitic roundworms (nematodes) that are spread to humans through mosquito bites. Three species of worms can cause this disease: Wuchereria bancrofti (the most common), Brugia malayi, and Brugia timori. When an infected mosquito bites a person, tiny larvae enter the body and travel to the lymphatic system, where they grow into adult worms over several months. These adult worms can live for years inside the lymph vessels, causing damage and blockage to the lymphatic system, which is a key part of the body's immune defense and fluid drainage. Many people with lymphatic filariasis have no visible symptoms for years, even though the worms are silently damaging the lymphatic system and kidneys. Over time, the disease can cause dramatic swelling of the limbs (lymphedema), most commonly the legs, and swelling of the genitals (hydrocele in men). In its most severe form, called elephantiasis, the skin becomes thickened and hardened, and the affected limbs become extremely enlarged. Patients are also more prone to painful bacterial skin infections in the swollen areas. The disease can cause significant disability and social stigma. Treatment involves antiparasitic medications to kill the worms, including diethylcarbamazine (DEC), ivermectin, and albendazole, which are used in mass drug administration programs in affected regions. For people who already have chronic swelling, careful hygiene, skin care, elevation of affected limbs, exercise, and sometimes surgery (especially for hydrocele) can help manage symptoms. While the infection itself can be treated and prevented, the chronic damage to the lymphatic system is often irreversible, making early treatment and prevention critically important.

Bring these to your next appointment

• Q1.What stage is my lymphatic filariasis, and how much damage has already occurred to my lymphatic system?,Which antiparasitic medication is best for my situation, and how long will I need to take it?,What daily care routine should I follow to prevent my swelling from getting worse?,How can I recognize a bacterial skin infection early, and what should I do if one occurs?,Are there surgical options that could help with my swelling or hydrocele?,How can I protect my family members from getting infected?,Are there mental health or support resources available for people living with this condition?

Common questions about Lymphatic filariasis

Related conditions

Other rare diseases commonly researched alongside Lymphatic filariasis.

• Primary lymphedema→